Η : μ > 27,2, Η : μ < 27.2 n = 31 test statistic = -0.93 p-value: conclusion w.r.t. Ho:
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- Consider the model y=-2.45x+7.18 derived from data between x=4 and x=10. What value of x represents interpolation of the data?6.7 (4) 7 The following three equations were estimated using the 1,534 observations in 401K.RAW: prate = 80.29 + 5.44 mrate + .269 age – .00013 totemp (.045) (.78) (.52) (.00004) R = .100, R² = .098. prate = 97.32 + 5.02 mrate + .314 age – 2.66 log(totemp) (1.95) (0.51) (.044) (.28) R? = .144, R² = .142. prate = 80.62 + 5.34 mrate + .290 age – .00043 totemp (.045) (.78) (.52) (.00009) + .0000000039 totemp? (.0000000010) R? = .108, R² = .106. Which of these three models do you prefer? Why?A sociologist wants to determine if the life expectancy of people in Africa is less than the life expectancy of people in Asia. The data obtained is shown in the table below. Africa Asia = 63.3 yr. 1 X,=65.2 yr. 2 o, = 9.1 yr. = 7.3 yr. n1 = 120 = 150
- H. : p = 0.65 and H, : p > 0.65 where p= the proportion of students who were quarantined at some point during the Fall Semester of 2020. Identify the correct explanation for a Type Il error. O Conclude the percent was higher than 65%, but it was not higher. Conclude the percent was higher than 65% and it was higher. O Did not conclude the percent was higher than 65%, but it was higher. O Did not conclude the percent was higher than 65% and it was not higher.The WISC-IV is a standardised instrument for measuring IQ in children. The population M = 100 and SD = 15. If a child scores 120 on the WISC then what is the Z score? %3D %3D O a. 1.5 O b. -1.33 Oc. 0.5 O d. 1.33The mean arterial pressure (or MAP, average arterial pressure in one cardiac cycle) is a measure for perfusion status. You are interested to know if it is possible to predict an adult's MAP (Y) based on the body surface area (X). Suppose you randomly selected 50 adults, and measured their mean arterial blood pressure (in mmHg) & body surface area (in m2). The results are reflected below: I = 1.6 s, = 0.5 y = 80.1 s, = 16.9 r 0.8 %3D %3D (Source: Nall, R. (2018, April 10). Mean arterial pressure: Normal, low, high readings plus treatment. Retrieved from https://www.healthline.com/health/mean-arterlal-pressurel There is a 99.7% chance that the actual MAP of those with body surface area of 1.66 m2 falls between and OA) 61.5; 102.0 B) 58.9; 104.5 O C) 66.5; 96.9 O D) 71.6; 91.9 E) 51.3; 112.1
- An experiment was conducted to study the extrusion process of biodegradable packaging foam. Two of the factors considered for their effect on the foam diameter (mm) were the die temperature(145°C vs.155°C) and the die diameter (3 mm vs. 4 mm). The results are in the accompanying data table. The question are attached in a photoFind the value of the test statistic. Round to 3 decimal places. • Claim: The mean top roller coaster speed around the country is 62 mph. • Data: X = 60 mph, s = 8.1 mph, n = 95 %3D %3D -2.407 None of these 2.815 -2.419 -2.778The attached data contains Part Quality data of three suppliers. At = 0.05, does Part Quality depend on Supplier, or should the cheapest Supplier be chosen?A researcher wanted to know if there was a relationship between stress and frustration. Theresearcher recruited n = 5 participants and asked them to solve a difficult puzzle in a short timeperiod. She then asked each participant to rate how stressful the task was and how frustratedthey were to solve the puzzle on a scale of 1 to 5. The data are below: Stress (X) Frustration (Y) 2 1 2 2 3 4 3 4 3 5 Calculate Peason's rn. ln. N Ciectical Cnyineers GToup as Cv = 40.32 % The following data represent the results obtained from the specific gravity (S.G.) test performed ina soil laboratory including * ?for sand samples. Find the mode Number of Specific Gravity 2.30-2.39 Samples 2.40-2.49 2.50-2.59 4 6. 2.60-2.69 12 2.70-2.79 14 2.80-2.89 2 3.35-3.40 2.10-2.15 2.20-2.25 2.70-2.75 2.80-2.85 2.30-2.35 2,60-2.65 2.40-2,45 2.50-2.55 2.90-2.95 ارفع اجابتك بشكل ملف wdf او صورة 1O 0O 10 O O O O Oy= is the subjects gpa X= time spent reading the newspaper Prediction Equation: y(hat) =3.426+.007x With an R2 of .003 interpret in terms of both: A) percent reduction in error and B) percent variabilitySEE MORE QUESTIONS
